It is hardly ever pleasurable to hear an injector noise on your Audi Sq7. It is a noise that comes up regularly, usually when you accelerate or your engine is idling. However, this warning sign may be connected to several kind of complications with your vehicle injectors. It may not be anything serious, but when a frequent noise shows up, you have to be sure. Especially since replacing your Audi Sq7’s injectors can be costly. That’s why our team chose to write this content in order to support you see more clearly, learn about the different possible failures and distinguish your issue. To do this, we will first look at the normal functioning and usefulness of the injectors in your Audi Sq7, then at the possible triggers from which an injector noise may come.
Functions of the injectors
Injectors are a very useful part of the operation of your engine. They were launched to the modern vehicles about 20 years ago. Before their appearance, more conventional carburettor-type intake systems were used, which handled the intake of air and fuel into the engine cylinders. With the injectors, manufacturers now have the possibility, thanks to the injectors pump, to control electronically each stage of the intake process very precisely (quantity of fuel injected, air/fuel mixture) via the analysis of the data accumulated from the various sensors equipping the vehicle (engine temperature, acceleration level, engine speed, etc.). Their aim is therefore to inject under high pressure a precise quantity of an air/fuel mixture at a perfect timing to obtain the best possible combustion in the cylinders.
The different origins of a clicking or knocking noise based on the injectors of your Audi Sq7
Experiencing injector noises on your Audi Sq7 may result from different locations, we will now look into the potential triggers of these. Generally, the usual noise of a faulty injector is of the snap type. Here are the several origins of these noises and the solutions to be implemented to eliminate them. If you hear another clicking noise but it is not from your injectors, we suggest you to examine this content about clicking noise on Audi Sq7 to discover the cause.
The explanations for injector clicking or knocking noise Audi Sq7
A clicking or knocking noise from your injectors can be justified by different explanations. In fact, the injectors of your Audi Sq7 have three main tasks, to manage the vaporisation of the fuel, i.e., to transform the liquid into “gas” during injection, to ease its combustion. Then, its task is to manage the air/fuel dosage and at last the homogeneity of the mixture, always with the target of improving combustion. If one of these three characteristics is modified, the main functionality of the injectors will be disrupted and this will lead to poor combustion. This bad combustion will be a violent explosion in the cylinders resulting from bad timing, or a bad quantity of mixture or finally an inhomogeneous mixture and will provoke thoses knocking or clicking noises on your Audi Sq7. The main cause of these concerns usually originates from a particle that gets into the injectors. The precision of the injector being in the nanometer range, any possible obstruction will inevitably produce a malfunction of the injector. If after verifying, this noise originates from another part of the engine of your Audi Sq7, have a look at this content for more infos.
The consequences of injector noise on Audi Sq7
Now that we have analyzed the several reasons for injector noise on your Audi Sq7, we will end by stating the possible side effects of malfunctioning one or more of your injectors. Whether only one is obstructed, or broken, or your entire fuel rail is involved, you cannot escape these consequences which can quickly become major….
First, you risk destroying your exhaust system in the long run, because the unburned fuel residues that will end up in your exhaust system can corrode the metal in it.
One of the most basic consequences experienced by drivers is a distinctive loss of power. In fact, if your engine is running on 3 out of 4 cylinders for example, you will undoubtedly have a loss of power
Finally, you risk degrading one of your pistons or your engine. Poor combustion will quickly harm your cylinders or pistons and your engine may tighten.
Here are three little tips to limit the risks linked to your injectors and protect you from engine failure:
- Do not drive at the bottom of the tank, as you may absorb impurities
- Use quality fuel
- Think of changing your diesel fuel filter regularly>
